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Additional Pictures 

 

The backside of the Sanyo ICC-804D calculator with an unusal finish and covered scews.

The Light-Emitting-Diode (LED) modules of the ICC-804D.

This ICC-804D was manufactured in Japan for the European market.

The backside shelf of the calculator housing accommodates 4 AA-sized NiCd batteries.

The internal construction of the ICC-804D with three printed circuit boards (PCBs):
Main PCB, Display PCB, and Keyboard PCB.

The Main PCB and Display PCB disconnected from the Keybaord assembly.

The SANYO LM8001 calculator chip
manufactured in wk 31 year 1971.

The SANYO LM8002 calculator chip
manufactured in wk 32 year 1971.

The SANYO LM8003 calculator chip
manufactured in wk 34 year 1971.

The SANYO LM8005 calculator chip
manufactured in wk 32 year 1971.

The Display PCB with eight LED modules and three discrete LED's.

The keyboard assembly with the discrete reed switches and the small magnets.


If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, January 7, 2010. No reprints without written permission.